3

Warm compress:
Apply warm compresses 3 to 4 times a day and it will come to a head and open up on its own or you may have to see a medical practitioner to have it drained. If it comes very often,avoid shaving your armpit and make sure you are not reacting to your deodorant. If no relief see a surgeon./dermatologist
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7

Recurrent "boils":
in this location could be a condition know as Hidradenitis Suppurativa which wound require an experienced Dermatologist to diagnose and recommend preventive treatements.
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